They killed priest wand spec, instead giving us +5% more healing/damage... more of a buff to SPriests than anything. Damn.
Shadowform now provides a 30% threat reduction on top of a spec able threat reduction talent? Nice.
I can live with the CD on COH, because I'm sure fights will be adjusted for it, further its now an INTELLIGENT HEAL! (and every healing class has a AOE heal, so its less of an issue).
Serendipity seems like it would work amazingly well for downranking and spamming. Low mana cost downranks, that Overheal return back enough mana that the net cost (after taking your MP5 into account) putting you AHEAD of what mana you were at prior to casting.
Imp Holy Concentration seems like its completely OP. 16% clearcasting chance? Then chaining in 3 60% haste casts?
Divine Providence seems like it might be a skipable talent, it really depends on how much AOE healing will be required.
Guardian Spirit seems... interesting. The +40% healing buff to the target seems like it might be the primary reason to cast it. Not the prevent death. Lets say you hit an enrage timer, or you are healers down at 5% on a boss. Pop that on the tank to give a surge of healing done. The "prevent death" is nice, but it keeps the tank alive at 10% HP instead of dying... though it prevents the "I just was about to get a HUGE heal off on you" from happening. Or if you time it right, if the tank is at 20% insta buff them with the spirit, and then cast your biggest heal... it should keep them alive just in time to get your big heal off. (Read: Macro that buff with a trinket and max heal)